keyboard layout:

A keyboard layout is any specific mechanical, visual, or functional arrangement of the keys, legends, or key–meaning associations (respectively) of a computer, typewriter, or other typographic keyboard.

How to select the keyboard preference :

System –>Preference –>Keyboard –>layouts –> Add

choose the layout based on country or language.

Now the selected layout is display in your keyboard preference, select the new layout and choose layout options as

|> key(s) to change layout.

click the small arrow on left side and tick the check box and close it.

Graphical display the layout out switching:

Rright click the panel and select add to panel and choose Keyboard indicator and Add.